Dataset Open Access
Neugebauer, Nils; Hache, Toni; Elm, M.; Hofmann, D. M.; Heiliger, C.; Schultheiß, Helmut; Klar, P. J.
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd"> <identifier identifierType="DOI">10.14278/rodare.578</identifier> <creators> <creator> <creatorName>Neugebauer, Nils</creatorName> <givenName>Nils</givenName> <familyName>Neugebauer</familyName> </creator> <creator> <creatorName>Hache, Toni</creatorName> <givenName>Toni</givenName> <familyName>Hache</familyName> <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0001-8245-5153</nameIdentifier> </creator> <creator> <creatorName>Elm, M.</creatorName> <givenName>M.</givenName> <familyName>Elm</familyName> </creator> <creator> <creatorName>Hofmann, D. M.</creatorName> <givenName>D. M.</givenName> <familyName>Hofmann</familyName> </creator> <creator> <creatorName>Heiliger, C.</creatorName> <givenName>C.</givenName> <familyName>Heiliger</familyName> </creator> <creator> <creatorName>Schultheiß, Helmut</creatorName> <givenName>Helmut</givenName> <familyName>Schultheiß</familyName> <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-6727-5098</nameIdentifier> </creator> <creator> <creatorName>Klar, P. J.</creatorName> <givenName>P. J.</givenName> <familyName>Klar</familyName> </creator> </creators> <titles> <title>Frequency- and magnetic-field-dependent properties of ordered magnetic nanoparticle arrangements</title> </titles> <publisher>Rodare</publisher> <publicationYear>2020</publicationYear> <dates> <date dateType="Issued">2020-11-09</date> </dates> <resourceType resourceTypeGeneral="Dataset"/> <alternateIdentifiers> <alternateIdentifier alternateIdentifierType="url">https://rodare.hzdr.de/record/578</alternateIdentifier> </alternateIdentifiers> <relatedIdentifiers> <relatedIdentifier relatedIdentifierType="URL" relationType="IsIdenticalTo">https://www.hzdr.de/publications/Publ-31690</relatedIdentifier> <relatedIdentifier relatedIdentifierType="URL" relationType="IsReferencedBy">https://www.hzdr.de/publications/Publ-31689</relatedIdentifier> <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.14278/rodare.577</relatedIdentifier> <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/rodare</relatedIdentifier> </relatedIdentifiers> <rightsList> <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights> <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights> </rightsList> <descriptions> <description descriptionType="Abstract"><p>We present a frequency and magnetic field dependent investigation of ordered arrangements of 20 nm magnetic<br> nanoparticles (MNPs) consisting of magnetite (Fe3O4) by employing micro Brillouin light scattering<br> microscopy. We utilized electron beam lithography to prepare hexagonally arranged, circularly shaped MNPassemblies<br> consisting of a single layer of MNPs using a variant of the Langmuir-Blodgett technique. By<br> comparing the results with non-structured, layered superlattices of MNPs, further insight into the influence<br> of size and geometry of the arrangement on the collective properties is obtained. We show that at low static<br> external field strengths, two signals occur in frequency dependent measurements for both non-structured and<br> structured assemblies. Enlarging the static external field strength leads to a sharpening of the main signal,<br> while the satellite signal decreases in its intensity and increases in its linewidth. The occurrence of multiple<br> signals at low external field strengths is also confirmed by sweeping the static external field and keeping the<br> excitation frequency constant. Micromagnetic simulations unravel the origin of the different signals and their<br> dependence on the static external field strength, enabling an interpretation of the observed characteristics in<br> terms of different local environments of an MNPs forming the MNP assembly.</p></description> </descriptions> </resource>
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